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MathGroup Archive 2005

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Re: String to numbers

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55360] Re: String to numbers
  • From: Bill Rowe <readnewsciv at earthlink.net>
  • Date: Sun, 20 Mar 2005 04:11:52 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

On 3/19/05 at 4:46 AM, jerb at saint-lukes.org (Erb, John) wrote:

>I have data in file in the form of strings, formatted as:
>
><2.54   3.11   2.89>
><3.58   5.24   5.66> .... more

>How can I read this into mathematica, and convert the strings to
>numbers, so I would have

>{{2.54,3.11,2.89},{3.58,5.24,5.66},...{}}

The following should do the trick

ToExpression/@ReadList[filename, Word, 
   RecordLists -> True, RecordSeparators -> {{"<"}, {">\n"}}]

Note, this assumes none of the numbers are formatted as

2.5e-03

or

2.5E-03

While ToExpression will convert these to an expression, it will not be what you are expecting.

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